It protects an area of flooded and terra firme forest in the Amazon biome.

[2] It covers parts of the municipalities of Amaturá, Jutaí, Santo Antônio do Içá and Tonantins in the state of Amazonas.

The Betânia Indigenous Territory overlaps the western part of the ESEC and the São Domingos do Jacapari e Estação Indigenous Territory overlaps the northern part.

[5] The Ecological Station is a "strict nature reserve" under IUCN protected area category Ia.

Vegetation types are typical of the igapó, floodplain and land environments in Amazonia.